/Engine/Source/Runtime/StaticMeshDescription/Public/StaticMeshOperations.h
Find all charts in the mesh description.
static int32 GetUVChartCount ( [FMeshDescription](API\Runtime\MeshDescription\FMeshDescription) & MeshDescription, int32 SrcLightmapIndex, ELightmapUVVersion LightmapUVVersion, const [FOverlappingCorners](API\Runtime\MeshUtilitiesCommon\FOverlappingCorners) & OverlappingCorners )